Description
The authors reconstructed the ground surface temperature history from a borehole off the southern coast of Lake Biwa, the largest and oldest lake in Japan, to produce a proxy climate record spanning the past 3000 years. The Medieval Warm Period was described as a period of warmth from the 8th to the 12th century A.D. Comparison of the magnitude of warmth during the Medieval and Current Warm Periods, however, could not be made because of anthropogenic and environmental factors influencing the record.